Fit or not fit ???????????
 

Would a 85,86, rear bumper fit on a 84 Firebird (not t/a), found some good ones and i'm not sure. JR1 & Little Man.

should fit dont see why not

all the bumper covers have the same mounting, 82-92.

I believe 'birds are all the same for 82-92(firebird w/o gfx's and formulas).

The T/A bumpers have 3 styles. Those are 82-84, 85-90, and 91-92.

They all bolt up to other years but the difference is the style of ground effects. A similar thing is the camaros w/factory ground effects. a 85 or 91 z28 rear bumper will fit a 84 z28 but the 84 version ground effects wont match up.

fit

Yes, but Barry's 88 formula rear tail lights are diff. and bumper has a taller lip at the bottom of the lights, plus my 84 lights didn't fit in his car without pushing down on the bumper cover to Force them in. JR1 & Little Man.